It is Dart packege that provide binding to TON SDK Client library. TON SDK (TONOS Client Library) is a library written in Rust that can be dynamically linked. It provides all heavy-computation components and functions, such as TON Virtual Machine, TON Transaction Executor, ABI-related functions, boc-related functions, crypto functions.

Use this package as a library

1. Depend on it

Add this to your package's pubspec.yaml file:

  ton_client_dart: ^0.1.0

2. Install it

You can install packages from the command line:

  $ pub get

Alternatively, your editor might support pub get. Check the docs for your editor to learn more.

3. Import it

Now in your Dart code, you can use:

  import 'package:ton_client_dart/ton_client_dart.dart'

How to use

Configuring client

import 'package:ton_client_dart/ton_client_dart.dart'
  'network': {
    'server_address': 'http://localhost',
    'message_retries_count': 5,
    'message_processing_timeout': 40000,
    'wait_for_timeout': 40000,
    'out_of_sync_threshold': 15000,
    'access_key': ''
  'crypto': {'fish_param': ''},
  'abi': {
    'message_expiration_timeout': 40000,
    'message_expiration_timeout_grow_factor': 1.5
var client = TonClient();
await client.connect(CLIENT_SETUP);
await client.disconnect();

To initialize the client, you need to call the TonClient.connect function and pass the settings to it. After you have finished working with the client, you must close it with the TonClient.disconnect function. Don't forget to call this functions.

Output TON SDK version

  await client.connect(CLIENT_DEFAULT_SETUP);
  var result = await client.version();
  await client.disconnect();

Query collection

  var query = await
      collection: 'accounts',
      result: 'id code',
      filter: {
        'id': {'eq': enmsg.address}
Query top 3 richest accounts
  var pq = ParamsOfQueryCollection(
      collection: 'accounts',
      result: 'id balance',
      limit: 3,
      order: [OrderBy(path: 'balance', direction: SortDirection.DESC())]

Execute getmethod and returns data from TVM stack

   final code = await File('./test/files/run_get_code.txt').readAsString();
   final data = await File('./test/files/run_get_data.txt').readAsString();

   final res = await client.abi.encode_account(ParamsOfEncodeAccount(
    state_init: StateInitSource_StateInit(code: code, data: data)));

   final adr = await client.utils.convert_address(ParamsOfConvertAddress(
    address:, output_format: AddressStringFormat_Hex()));
   var res_run_get = await client.tvm.run_get(ParamsOfRunGet(
    account: res.account, function_name: 'participant_list'));
   String result = res_run_get.output.toString();
Note: see tests for more examples.
Note: you can see the contract deployment procces here.

Supported Platforms

Now it is supported only on Linux x64.

  • Windows x64 will be available soon.
  • macOS throught some period of time.

Compile for unavailable platform

Compiling for Windows or Mac shouldn't be difficult. You need to take the following steps:

  1. Get the TON SDK library for the required platform .
  2. Compile wrapper.cpp file into a dynamic link library for the given platform.
  3. Add load processing for the given platform to the connect function in core.dart file.
  4. Done! If you have any question, feel free to ask!


  • Build single file sdk library
  • Windows support
  • iMac support
  • Refactor code generator and release it opensource
  • improve tests
  • change request id generation
  • improve help documents and comments
  • check memory leaks
  • Flutter support
  • improve error msgs
  • think about
    • helper function usage
    • query module
    • contract auto deploy and runing module
    • connect functoin with object from map param
    • version as TON SDK lib